#useful-top {
    background-image: url("../img/pub_useful/useful-kv@2x.jpg");
    background-position: top center;
    width: 100%;
    background-size: cover;
    height: 330px;
    max-width: 2000px;
    margin: 0 auto;
}

.useful-title {
    font-size: 60px;
    line-height: 80px;
    color:#D3B98F;
}

.useful-content {
    font-size: 21px;
    line-height: 32px;
}

a.blue-title {
    color:#0093FF;
}

a.blue-title:hover {
    text-decoration: underline;
}

@media (max-width: 820px) { 


    #useful-top {
        background-image: url("../img/pub_useful/useful-kv-m@2x.jpg");
        height: 300px;
    }


    .useful-title {
        font-size: 30px;
        line-height: 36px;
        padding-bottom: 10px;
    }

    .useful-content {
        font-size: 18px;
        line-height: 28px;
        margin-top:20px;
        margin-bottom: 20px;
    }

    #about-section {
        margin-bottom: 40px;
    }

}


@media (max-width: 768px) { 



}


@media (max-width: 414px) { 


    #useful-top {
        background-image: url("../img/pub_useful/useful-kv-m@2x.jpg");
        height: 152px;
    }
}